Module util 

Structs

TracingInfo

Tracing context passed through ArbOS for EVM debugging/tracing support.

Enums

TracingScenario

The scenario in which tracing is occurring.

Constants

ADDRESS_ALIAS_OFFSET

The offset applied to L1 addresses when they appear on L2. This prevents a contract on L1 from impersonating an L2 address.

INVERSE_ADDRESS_ALIAS_OFFSET

The inverse offset for remapping L2 aliased addresses back to L1.

Functions

address_from_256_from_reader

Reads a 32-byte padded address from a reader (last 20 bytes are the address).

address_from_reader

Reads a 20-byte address from a reader.

address_to_256_to_writer

Writes a 32-byte padded address to a writer (left-padded with zeros).

address_to_hash

Converts an address to a B256 hash (left-padded with zeros).

address_to_writer

Writes a 20-byte address to a writer.

burn_balance

Burns balance from the given address.

bytestring_from_reader

Reads a length-prefixed byte string from a reader.

bytestring_to_writer

Writes a length-prefixed byte string to a writer.

does_tx_type_alias

Whether a transaction type uses address aliasing.

hash_from_reader

Reads a 32-byte hash from a reader.

hash_to_writer

Writes a 32-byte hash to a writer.

int_to_hash

Converts a signed integer to a B256 hash (big-endian).

inverse_remap_l1_address

Removes the L1→L2 address alias offset.

mint_balance

Mints balance to the given address.

remap_l1_address

Applies the L1→L2 address alias offset.

transfer_balance

Transfers balance between two addresses.

tx_type_has_poster_costs

Whether a transaction type incurs L1 poster costs and standard fee distribution.

uint64_from_reader

Reads a uint64 from a reader (big-endian).

uint64_to_writer

Writes a uint64 to a writer (big-endian).

uint256_from_reader

Reads a U256 from a reader (big-endian).

uint_to_hash

Converts an unsigned integer to a B256 hash (big-endian).